242 Professor Hdward B. Poulton on the 
numbers of them lying in the path apparently 
dead ; but after the sun had warmed them they all re- 
covered. 
Aveusr 30.—At this date I had a good opportunity of 
watching the habits of the males in the presence of a 
female. About a mile from the hotel, along the upper 
road to Zinal, at about 11 a.m., I came upona spot which, 
on account of its aspect and slope, had not long been 
warmed by the sur, so that the insects were only just 
beginning to bestir themselves. Here was a little group of 
this species—two males and a female—probably close to 
the place in which they had passed the night. ‘lhe female 
was resting quietly on a small piece of rock, slhghtly 
moving her abdomen, probably in relation to respiration. 
Later on she drew each antenna beneath the first leg of 
the same side, or perhaps drew the leg over the antenna. 
It is probable that this movement is intended to wipe off 
the dew. ‘The males often did the same, and the female 
rubbed its eye, probably for the same purpose. ‘This 
explanation is all the more probable because I did not 
see these movements at any time when the heat of the sun 
was sufficient to have dispersed the dew ; although the 
species was carefully observed on many occasions. One 
male, standing by the female, was stridulating when I came 
up ; the other was behind motionless. These three insects 
were extremely shy, although this was by no means the 
case at other times when individuals of this species were 
watched in the heat of the day. Although I approached 
so that my shadow was behind me, and very gently, the 
male beside the female was alarmed at each slight rustle 
or movement, raising himself on his legs and erecting 
his antennx, apparently thoroughly on the alert. ‘Then 
when I kept perfectly still he resumed his former position 
and depressed the antennz towards the female, both of 
whose antenne were also generally depressed. He did 
not continue to stridulate, but, after remaining almost 
motionless for some ten minutes, except for cleaning his 
antenne now and then, turned his back on the female and 
apparently began eating the heather. In a few seconds 
the other male stridulated once or twice: the effect on 
the first male was instantancous ; he stridulated for a 
second or two and then walked back to the female, 
depressed one antennz towards her and patted her on the 
thorax with oue of the first pair of legs. After all this 
